diff --git a/config.yml b/config.yml
index a9daabb..982723c 100644
--- a/config.yml
+++ b/config.yml
@@ -126,4 +126,4 @@ markup:
     anchorLineNos: false
     guessSyntax: false
   tableOfContents:
-    endLevel: 4
+    endLevel: 3